Hamilton passed pole-sitter Rosberg at the start but his hopes were dashed when the two made contact on the second lap as Rosberg tried to retake the lead, slashing Hamilton’s rear tyre with his front wing.
Hamilton made it back to the pits but struggled with a damaged car from then on and finally retired five laps from the end after repeatedly asking to stop.
“Absolutely unacceptable. Lap number two of a long race and a crash between two team-mates, we have often discussed the situation and it happened today. You don’t try to overtake with the knife between your teeth in lap number two and damage both cars. Strong words from Mercedes executive director Toto Wolff, who tells BBC Sport
“This is a decisive moment in the battle between the two of them and for the team. Lewis is very upset, we kept him out there for a long time with a damaged car. He will recover quickly. It is going to be handled.”